If the DLC does not appear in-game (you won't see the Bugatti Vitesse in the dealership), you need to verify the game files. Go to Properties -> Repair. Sometimes EA servers forget you own the license; signing out and back in usually fixes this.
: Focused on raw performance, this pack adds five of the world's fastest exotics, including the Bugatti Veyron Grand Sport Vitesse , Pagani Zonda R, and Hennessey Venom GT Spyder. Platform Availability & Purchase Options Nfs Most Wanted 2012 All Dlc Pack Download
To summarize, follow this checklist:
map expansion, new single-player modes (Drift Attack, Smash & Grab), and five cars: Alfa Romeo MiTo QV, Audi RS 3, BMW 1 Series M, Ford Fiesta ST, and Porsche 918 Spyder. Movie Legends Pack If the DLC does not appear in-game (you